Alexander Denner Net Worth
Eleanor Gray
Published Mar 21, 2026
The estimated Net Worth of Alexander J Denner is at least $3.34 Billion dollars as of 26 February 2021. Alexander Denner owns over 1,350,000 units of Biogen Inc stock worth over $3,339,476,100 and over the last 15 years he sold BIIB stock worth over $1,800,788. In addition, he makes $422,643 as Independent Director at Biogen Inc.
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Alexander Denner BIIB stock SEC Form 4 insiders trading
Alexander has made over 23 trades of the Biogen Inc stock since 2012, according to the Form 4 filled with the SEC. Most recently he bought 1,350,000 units of BIIB stock worth $12,744,000 on 26 February 2021.
The largest trade he's ever made was buying 1,350,000 units of Biogen Inc stock on 26 February 2021 worth over $12,744,000. On average, Alexander trades about 108,423 units every 53 days since 2009. As of 26 February 2021 he still owns at least 15,390,000 units of Biogen Inc stock.
You can see the complete history of Alexander Denner stock trades at the bottom of the page.
